Gems are a currency in Idle Mine: Remix. To earn gems you mine ores (It doesn't matter which type of ore you mine). The default chance of getting a gem from an ore is 2% . Upgrades can improve the chance up to 100%. You can use gems for gem upgrades and new pickaxes. The best way to get gems is by mining ores that can be one-hit with your current pickaxe and stats.

An image of how gems appear in-game.
You can get gem upgrades from breaking THE GEM .
Gem Upgrades[]
Blacksmith+
Makes your blacksmith even stronger.
This multiplies your blacksmith strength.
This upgrade is infinite.
Blacksmith Skill II
Pickaxes get a high quality boost.
This adds to the quality of your blacksmith by up to 734.8%.
This upgrade can be purchased 50 times.
Idle Power II
No more clicking needed! Idle clicking gets even stronger.
Multiplies the idle clicking by up to 10,000,000% and purchased 100 times.
Gem Waster+
Waste even more gems! But are they even wasted?
This upgrade is very limited, as you can only buy it 5 times.
Gem Chance II
Increase the chance to get gems
This upgrade is limited, you can buy it 80 times.
Gem Multiplication
Multiplies the amount of gems you earn when breaking an ore.
This upgrade is infinite.
Offline Gems
This upgrade makes you able to earn gems when you are not playing.
Offline Gems is a limited upgrade, as it can be upgraded 15 times.